Chısıo: Bileşik çizge düzenlemesi ve yerleştirmesi için görsel bir çerçeve

Graphs are data models, widely used in many areas from networking to biology tocomputer science. Visualization, interactive editing ability and layout of graphsare critical issues when analyzing the underlying relational information.There are many commercial and non-commercial graph visualization tools.However, overall support for compound or hierarchically organized graph repre-sentations is very limited.We introduce a new open-source editing and layout framework named Chisiofor compound graphs. Chisio is developed as a free, easy-to-use and powerful aca-demic graph visualization tool, supporting various automatic layout algorithms.It is written in Java and based on Eclipse?s Graphical Editing Framework (GEF).Chisio can be used as a finished generic compound graph editor with standardgraph editing facilities such as zoom, scroll, add or remove graph objects, move,and resize. Object property and layout options dialogs are provided to modifyexisting graph object properties and layout options, respectively. In addition,printing or saving the current drawing as a static image and persistent storagefacilities are supported. Saved graphs or GraphML formatted files created byother tools can be loaded into Chisio. Furthermore, a highlight mechanism isprovided to emphasize subgraphs of users interest.The framework has an architecture suitable for easy customization of the toolfor end-users? specific needs as well. Also Chisio offers several layout styles fromthe basic spring embedder to hierarchical layout to compound spring embedder tocircular layout. Furthermore, new algorithms are straightforward to add, makingChisio an ideal test environment for layout algorithm developers.iiiivKeywords: information visualization, graph layout, graph editing, software sys-tem, graph editor, compound graphs.